John holtzmak



Patented Jn. 27; 1931 TES UN1TsD `sTA Jomv noL'rzxAN, or NEW Yoan, N. Y.

noonLoo'x Application led. November 27, 1926. Serial No. 151,045.-

This invention relates to`1ocking devices with particular reference to types commonly known as deadbolts.

One of the objects of this invention is to provide a lock wherein the bolt so engages the keeper that it is impossible to pry the device en. A further object is in the provision of vmeans for positively retaining they bolt in a locked position whereby the device cannot be opened from the outside without employing the proper key. y I

These and' other objects, which will become apparent combination and arrangement of parts. here-y inafter described and illustrated in the accompanying drawing, forming a material part of this disclosure, and in which:-

Figure 1 is a partial rear elevational, partial longitudinal sectional view of the preferred embodiment of the lock shown in a locked position.

Figure 2Jis a4- rear elevational view of the same in an inoperative position, the cover plate being removed to show the construction.

Figure 3 is a transverse sectional view taken on line 3-3 of Figure 1. l

Figure 4 is a partial longitudinal sectional view of the lock as applied to a door taken in a plane at a right angle to Figure 1.

Figure 5 is a transverse sectional view taken on line 5-5 of Figure 4. v

In the drawing, the numeral 15 generally designates 'a rectangular casing fixed to a door 15 and having incurved lower side walls 16 in which is formed longitudinal seats 17.

Slidable on the seats is a plate 18 having a transverse slot 19, extending half-Wayacross the plate near one end of the same, the plate being secured at 20 to a rectangular block 21 provided with a longitudinal T shaped recess 22, the block having an end plate 23 at one end, the other end being adapted to pass through an opening 24 in the casing 15 and engage a keeper 25 fixed by screws to a door frame or jamb 27.4

Rotatable in the recess 22 is a cylindrical locking bolt 28 having a narrow transverse head 29 at one end and a reduced stem portion as'the description progresses,l K 15 are accompllshed by the novel construction,

30 at the other end passing through the plate 23 to which is fixed a small semi-circular d isc 31 having a projecting lug 32 engageable in a t recess formed in a slide 34 one edge of which is fiush against the plate 23, the slide having an elongated slot 35 engaging a headed pin 36 fixed in the plate 18 and by which it is guided. o

Journalled lin the front wall of the casing 15 is a tubular element 37, prbvided with a knob 38, the innerend of the tube being upset to engage a crank 40 in the outer end of which is fixed, a short'post 41 passing through the slot 19 of the plate 18 and having' a flattened surface 42 in which is secured at a right angle thereto, a in 43, engaginga recess 44 in the slide.34. he pin 43 is given movement in an arcuate path by the crank 40 and togetherv with the disc 31 and slide 34 constitute the means for rotating the auxiliary boltl 28. It

will be seen that said means is arranged out- .j side of and in spaced relation to the mainand auxiliary bolts whereby the parts are easily accessible for replacement and repair.

Mounted on the top of the post 41 is a collar 45 having a semi-circular extending guide ring 46 around the outer periphery to engage a pin 47 set. in aV crank 48 fixed on a. thimblc 49 prbvided with a slot 5() engaging the siem 5l ofthe tumbler lock 52 mounted in thedoor, 15 and passing therethrough to be actuated from the outside by a` key 53, the thimble being rotatably secured in the offset portion 54 ot' a cover plate 55 fixedby screws to the casing 15. f i

. Secured by a pin157 to the collar 45 is one end of a spring 58, the other end of which is fixed at 59 to one of the curved walls 16, of the casing. Said spring serves to maintain the crank 40 in its horizontal or dead center positions and prevents undesired displacev ment of the parts from locked or unlocked positions.

In operation theknob 38 is revolved in a counter clockwise direction, thus, by means of the crank 40, sliding the plate 18 and the block 21 so that theblock will engage the keeper 25.

lVhen actuating the lock yfrom the outside, the key53 is engaged in the tumbler 52, rotating the stem 51 to cause the pin 41 to operate the slide 18, by engaging the collar 45.

Thus it may be seen that a lock has been disclosed wherein a revolving locking bolt is encased in a slidable block, a combination which, when engaged in a keeper, makes. the

lock absolutely pry-proof and at the same time.

impossible to unlock from the outside without the use of the proper key.

While certain preferred embodiments of this device have been shown and described, it will be understood that changes in the form, arrangements, proportions, sizes and details thereof may be made without departing from the scope of the invention as defined in the appended claims.

Having thus described my invention, what I 'claim as new and desire to secure by Letters Patent, is

1. A lock comprising a casing, a block slidable in said casing, a bolt rotatable in said block, a slotted plate fixed to said block, a slide transversely movable on said plate and outside of said block, said slide being provided with a pair of recesses, a disc on said bolt, a lu integral with said disc inserted into one o the recesses, a pin in the other recess for guiding said slide, a pair of cranks journalled in said casing, and means operatively connected to said cranks to actuate said lock.

2. A lock comprising a casing, a block slidable in said casing, a bolt rotatable in. said block, a slotted plate fixed to said block, said plate being slidable in said casing, a slotted transverse slide on said plate, said slide containing a pair of recesses, a lugged disc on said bolt en ageable in one of the recesses, a pair of cran s rotatable in said casing, a p1n on one of said cranks, a post on the other of said cranks, said post being engageable in said plate, a second pin extending from said post, said pin being engageable with said transverse slide, and means intermediate said first pin and said post to actuate said block and bolt.

3. In a lock comprising a casing, a main bolt slidably mounted in said casing, a solid cylindrical auxiliary bolt, revolvably mounted in an elongaf ed recess arranged longitudinally of and extending through the side walls of said main bolt whereby the auxiliary bolt is accessible through the sides of the main bolt, and key actuated means mounted in said lock casin to move the main bolt into the locked position thereof and to turn theauxiliary bolt.

4. In a door lock, a casing, a main bolt slidingly movable in said casing, an auxiliary bolt of substantially the thickness of the main bolt revolvably mounted in said main bolt, a crank in said casing for actuating the main bolt, a pin movable in an arcuate path by said crank, a slide directly engaged and aciuated by said pin in a direction at right augles to that of the movement of the main bolt and operatively connected to the auxiliary bolt for turning said auxiliary bolt and key acLuatednieans to o erate said crank.

5. In a door loc a casing, a main bolt slidinglymovable within said casing, an auxiliary cylindrical bolt revolvably mounted in said main bolt a revolvable member secured to the auxiliary bolt, exteriorly of and independently of the main bolt, for actuating the auxiliary bolt when said main bolt is in locked or unlocked position and a slide for operating said member, said slide being exposed in the casing for access thereto.

6. In a door lock comprising a casing, a main bolt movable wiihin said casing, an auxiliary bolt rotatably mounted within said main bolt, and mechanism for actuating said main and auxiliary bolts, said mechanism being disposed outside of said main bolt and in spaced relation to the same and spring means to maintain the main bolt at dead center when said bolt is in operative position.

7. In a door lock comprising a casing, a keeper, a main bolt movable within said casing, an auxiliary bolt rotatably mounted in the main bolt and having a projection, said main and auxilary bolts arranged to enter the keeper when said lock is in its operative position and mechanism in the casing for transmltting rotatory motion to said auxiliary bolt, said mechanismincluding a pin, movable in an arcuate path and a transversely movable slide normally out of engagement with said pin and directly engaged by said pin only when the auxiliary bolt is actuated and key actuated means to operate said mechanism.

8. A lock comprising a casing, a block slidable in said casing and of considerably less length than that ot' the casing, a bolt rotatable in said block, afrecessed slide mounted independently of the block for movement substantially perpendicular to that of the block, said slide being exposed in the casing inwardly of and in spaced relation to the inner end of the block and being operatively connected to the bolt, and a pin mounted for arcuate movement and independent of the slide and theblock, adapted to enter the recess of the slide for actuating the slide.

9. In a door lock, a casing, a block having a slot therein slidable in said casing and provided with a slotted extension, a cylindrical bolt rotatable in the block and provided with projections adapted to pass through the slot of said block on the rotation of the bolt, a crank rotatable in said casing, a post projecting from said crank a nd passing through the slot of said extension, a pin extending from said post substantially parallel to said crank, and a vertically slidable element engaged by said pin and operatively connected to said cylindrical bolt.

10. In a door lock, a casing, a main bolt slidable ywithin the casing, an auxiliary bolt rotatable in the main bolt and having a projection adapted to extend beyond said main tuated, and a rotatable element secured to the auxiliary bolt and engaging and operated by said slide.

11. In a door lock, a casing, a main bolt slidable within the casing, an auxiliary bolt rotatable in the main bolt, and mechanism in the casing for turning said auxiliary bolt, said mechanism including only a crank, a post projecting froml said crank, a pin extending from sald post, a slide movable substantiall perpendicular to the movement vof the bloc engaged direcly by said pin only when the auxiliary bolt is actuated, and otherwise free v of said pin, and a rotatable element fixed .to

the auxiliary bolt and operated bylsaid slide; and key actuated mechanism to rotate said post including a crank normally independent ot' said post, and a collarion said post operated by the crank on the actuation thereof by a ke l2. A lock comprising a casing, a slotted plate slidable in said casing, a block fixed to said plate, a cylindrical bolt of substantially the thickness of said block'mounted in said block, a crank rotatably -mounted in the casing, a post carried by said crank arranged to project through the slotted'portion of said plate and being in permanent engagement with the sides of the slot, means for turning the bolt. a pin carried by said.

post for actuating the bolt turning means, said crank arran ed to be rotated through an arc of 18()o or sliding the end of the block out of the casing and transmitting rotary motion to said bolt, a collar mounted on said post and key actuated mechanism to operate said collar for rotating the post and thereby'rotating the bolt and retracting said block inside the casing.

13. A door lock comprising a casing, a block slidable in said casing, a cylindrical bolt rotatably mounted in said block, a plate extending Afrom said block and having a slot, a crank journalled in said casing and in permanentV engagement with said slot for moving said block, a vertically movable slide, i

a pin on said crank directly engaging said slide for rotating said bolt, a collar mounted on said crank, and a second crank rotatably mounted in said casing engaging said collar to rotate said first crank, said slot limiting the rotary motion of said first crank to an. arc of 180, whereby the block is held by said first crank against forcible re- ,traction in the extreme locking position thereof.

14. A lock comprising a casing, a block movable in said casing and adapted to be projected therefrom, a cylindrical bolt revolvably mounted in said block, mechanism to reciprocate said block and turn 'said bolt, said mechanism including a slotted plate, a crank rotatably mounted in the casing, a post projecting from said crank and permanently engaging said slot, whereby said slot limits the rotary movement of'said crank to an arc of 180, said crank holding the block in its outermost position against forcible retrac'-- tion, a pin carried by said post for turning the bolt and a second key-controlled crank to actuate the first crank.

.15. A door lock comprising a casing, a block'slidably movable in said casing and adapted to be projected therefrom, a crank rotatably mounted in the casing, a slotted plate fixed to -said block, a post projecting from said crank, and arranged to entersaid slot yfor transmitting reciprocatory motion to said block, said post arranged to slide in the slot on the rotation of the crank, the length of said slot being such as to limit the angular movement of said crank to an arc of 180 in either direction, means for rotating the bolt, means on the post for engaging and operating said rotating means, and manual means to operate said crank, whereby when said crank extends horizontally in one direction, the block is projected out of the casing and holds the same against forcible retraction, and when said crank extends in the opposite direction, the block is in retracted position and is .locked in said position.

16. In a door lock, the combination of a casing having a cover plate, a block slidingly movable in said casingand adapted to be projected therefrom, a cylindrical bolt rotatably mounted in said block, a plate hav# ing a slot therein fixed to said block, a crank journalled in said casing and inserted into said slot, manual means for rotating said crank, said slot designed to limit the rotary movement of said crank to an are of 180, whereby the crank reciprocates said block and holds said block against forcible retraction, a pin' carried by said crank, mechanism to rotate the cylindrical bolt directly engaged and operated by said pin, a second crank revolvably mounted in the cover to operate the first crank and key actuated means to rotate said second crank.

17; In a lock comprising a casing, a block slidable in said casing, a cylindrical bolt rotatable in said block, a slotted plate extending from said block, mechanism to re ciprocate said block and rotate the bolt, said mechanism including a'crank pivoted to the engaging the slotted portion of the plate, the height of said slot being such as to limit the rotary movement of said crank to an arc of 180, and means operatively connected to the bolt and the crank for rotating the bolt, said crank when in the limiting po sitions thereof holding said block against movement, a second key-controlled crank to actuate the rst crank and a coil 'spring secured at one end to the casing and at the other end to the first crank for maintaining the crank in its dead-center positions, said other end being movable with said crank from one side to the other side of the crank pivot.

18. A lock comprisinga casing, a block slidable longitudinally of said casing, a plate secured to the block and having an extension projecting past the inner end of the block, a cylindrical bolt of a diameter substantially equal to the thickness of the block rotatable in the block and means in said casing betwen the afore-mentioned inner end of the block and the free end of said extension for rotating said bolt in the sliding of the block, including an exposed slide movable transversely of the casing and arranged exteriorly of the block on the same side of the block as is said extension, and a similarly arranged rotatable member `operated by the slide.

19. A lock comprising a casing, a block slidable in said casing and having an inner end inside of the casing, and an outer end adapted to be projected through one end of the casing, a bolt rotatable in said block, 'a slide movable transversely of the block and arranged entirely outside of the block, and between the inner end of the block and the opposite end of the casing, means for sliding said block, a rotatable member connected to said bolt between the inner end of the block and said opposite end of the casing and operated by said slide, and manually operableV rotatable means directly engaging the slide for actuating said slide.

20. A lock comprising a casing, a block slidable in said casing, a bolt rotatable in said block, a slotted plate fixed to said block, and extending therefrom, a slide movable transversely of the block and exposed on at least two sides and two ends thereof arranged on the rear surface of said plate, said slide containing a recess, and an exposed disc on said bolt and spaced inwardly from the end of the block, and having a lug for engaging the sides of said recess for rotating said bolt onthe movement of the block.

21. In a lock, a casing, a rotatable bolt mounted in said casing and having a transversely arranged projection at its outer end, a keeper for said lock, said bolt being arranged to enter said keeper and interlock therewith in the operativeposition thereof and being retracted out of said keeper and Within said casing when inoperative, and mechanism mounted in the casing for transmitting first longitudinal and then rotary motion to said bolt and vice versa, said mechanism comprising a slotted plate for the bolt movable in the casing, a crank mounted in said casing, a post carried by said crank and arranged to project through the slotted portion of said plate and adapted to be rotated through an arc of approximately-180, said post havin detachable operative engagement with the inner end of said bolt to turn the same in one direction during the movement of said crank in the slot of theJ plate upon the rotation of said crank in a given direction and to turn the bolt in the other direction when said crank is rotated in the opposite direction, a spring mounted in the casing to maintain said crank in alignment with said bolt for forming a dead center against forcible retraction of said bolt, and means to operate said crank.

22. In a lock, a casing, a rotatable bolt mounted in said casing and having a projection on the front end thereof, a movable slotted plate for projecting said bolt out of the casing,a crank mounted for oscillation in said casing, a post carried by said crank projectingfthrough and permanently engaged in said slot for actuating said plate, means for detachably and operatively connecting said post to the inner end of said bolt to turn the same in one direction near the completion of the projecting movement of the bolt and in the opposite direction at the beginning of the retractive movement of the bolt inside of the casing, spring means mounted in the casing for maintaining the crank in axial align# ment withthe bolt in the 'extreme positions of the bolt, and manually operated means to rotate the crank.

23. In a lock, a casing, a revolvablc bolt mounted in said casing, a longitudinally slidable member mounted-in the casing for retracting and projecting said bolt into and out of the casing, a rotatable member' mounted in said casing for arcuate movement and in permanent operative engagement with said slidable member, said rotatable member being in detachable operative connection with .the inner end of said bolt in two positions for turning said bolt, one of said positions being when the projecting operation is about to be completed, and the other being when the bolt retracting operation is begun duringonc end ofthe arcuate movement of said member. and manually operable means to actuate said rotatable member.

24. In a lock, a casing, a cylindrical bolt rotatably supported in said casing, a slotted plate for the bolt slidingly mounted in said casing, a crank revolvably mounted in one of the Walls of said casing and in constant engagement with the slot of the plate for sliding said plate and said bolt, and means interposed between the crank and the inner end of the boli; for intermittently and operatively connecting the crank with said end of the bolt for 'rotating the same in one direction when said bolt is projecte ouil of the casing and roating said bolt in the opposite direction upon its retraction, and manually operated means to operate said crank.

n'testimony whereof I have signed my name to this specification.

-- JOHN HOLTZMAN. 

